-, TRAVIS, C. C. {., & ETNIER, E. L. [. (1984). Groundwater pollution: Environmental and legal problems. AAAS.
Cita Chicago (17th ed.)-, Curtis C. {ed TRAVIS, i Elizabeth L. [Ed.] ETNIER. Groundwater Pollution: Environmental and Legal Problems. Massachusetts: AAAS, 1984.
Cita MLA (9th ed.)-, et al. Groundwater Pollution: Environmental and Legal Problems. AAAS, 1984.
Atenció: Aquestes cites poden no estar 100% correctes.